The worst thing about a volume knob is that, having connected it to a computer, it might be wrong: if you’ve manually altered the volume settings somewhere else, the knob’s reading ...
Melexis’ dual-input inductive sensor simultaneously reads signals from two sets of coils to deliver accurate torque and angle measurements.
Qualcomm is acquiring Arduino but allowing it to operate independently. The new Qualcomm-powered UNO Q is available for $44. Qualcomm is a huge player in the SBC space, dwarfing Raspberry Pi.